package main

import (
	"fmt"
)

var a = 11

func foo(n int) {
  a := 1
  a += n
	fmt.Println("foo a:", a)
}

func main() {
  fmt.Println("a =", a) // 11
  foo(5)
  fmt.Println("after calling foo, a =", a) // 11
}
